Question

question 5: define placebo. choose the correct answer below. a controlled study to determine the effect varying one or more explanatory variables or factors has on a response variable grouping together similar experimental units using treatments on many experimental units an innocuous medication, such as a sugar tablet, that looks, tastes, and smells like the experimental medication

Explanation:

A placebo is an innocuous medication, such as a sugar tablet, that looks, tastes, and smells like the experimental medication. It is used in controlled studies to account for the placebo - effect and isolate the true effect of the actual treatment.

Answer:

An innocuous medication, such as a sugar tablet, that looks, tastes, and smells like the experimental medication